Correlative Live Cell and Super Resolution Imaging of Autophagosome Formation

Area of Science:

• Cell Biology
• Molecular Biology
• Microscopy

Background:

• Autophagy is a fundamental cellular process involving dynamic protein-membrane interactions.
• Understanding autophagy requires direct observation of its components in living cells.
• Current imaging techniques have limitations in resolving these dynamic interactions.

Purpose of the Study:

• To provide an overview of methods for imaging fluorescently labeled autophagy components in living cells.
• To detail techniques for acquiring super-resolution images from live-imaged cells.
• To enable detailed observation of the autophagy pathway dynamics.

Main Methods:

• Wide-field microscopy for live-cell imaging of fluorescently labeled autophagy components.
• Postfixation correlative super-resolution microscopy on previously live-imaged cells.
• Integration of live-cell and super-resolution imaging techniques.

Main Results:

• Demonstration of methods to visualize autophagy pathway dynamics in living cells.
• Acquisition of high-resolution images complementing live-cell observations.
• Combined techniques allow for detailed tracking of autophagy processes.

Conclusions:

• Combining live-cell wide-field and super-resolution microscopy offers a powerful approach to study autophagy.
• This integrated methodology provides unprecedented detail on the spatiotemporal dynamics of autophagy.
• The described methods enhance our ability to investigate the molecular mechanisms of autophagy.